脱式计算:(能简算的要简算)615×17+815÷7;910÷[12×(65-310)];8.6×234-0.6÷411.-数学

题目简介

脱式计算:(能简算的要简算)615×17+815÷7;910÷[12×(65-310)];8.6×234-0.6÷411.-数学

题目详情

脱式计算:(能简算的要简算)
6
15
×
1
7
+
8
15
÷7

9
10
÷[
1
2
×(
6
5
-
3
10
)]

8.6×2
3
4
-0.6÷
4
11
题型:解答题难度:中档来源:不详

答案

(1)class="stub"6
15
×class="stub"1
7
+class="stub"8
15
÷7

=class="stub"6
15
×class="stub"1
7
+class="stub"8
15
×class="stub"1
7

=(class="stub"6
15
+class="stub"8
15
)×class="stub"1
7

=class="stub"14
15
×class="stub"1
7

=class="stub"2
15


(2)class="stub"9
10
÷[class="stub"1
2
×(class="stub"6
5
-class="stub"3
10
)]

=class="stub"9
10
÷[class="stub"1
2
×class="stub"9
10
],
=class="stub"9
10
÷class="stub"9
20

=2;

(3)8.6×2class="stub"3
4
-0.6÷class="stub"4
11

=8.6×class="stub"11
4
-0.6×class="stub"11
4

=(8.6-0.6)×class="stub"11
4

=8×class="stub"11
4

=22.

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